st: New -sencode- and -sdecode- packages on SSC

[Roger Newson <roger.newson@kcl.ac.uk>]

Fellow Statalisters

Thanks to Kit Baum, there is now a new version of the -sencode- package, 
and a new package -sdecode-, available for download on SSC. In Stata, type 
-ssc desc sencode- or -ssc desc sdecode- to find out more.

-sencode- and -sdecode- are "super" versions of -encode- and -decode-, 
respectively, and are described as below on my website. Both packages now 
offer the user the choice of a -replace- option (which causes the output 
variable to replace the input variable) or a -generate()- option (which 
causes the output variable to be generated as a new variable). These 
options are similar to the options of the same name in the official Stata 8 
packages -destring- and -tostring-, which also convert string variables to 
numeric and vice versa, respectively.

Best wishes

Roger

------------------------------------------------------------------------------------
package sencode from http://www.kcl-phs.org.uk/rogernewson/stata7
------------------------------------------------------------------------------------

TITLE
      sencode: Encode a string variable non-alphanumerically into a 
numeric variable

DESCRIPTION/AUTHOR(S)
      sencode is an extended version of encode. It takes, as input, a string
      variable, and generates, as output, a numeric variable, with value 
labels
      corresponding to values of the string variable. The output numeric 
variable
      may replace the input string variable or be generated as a new variable.
      sencode orders the numeric values corresponding to string values in the
      sequential order of appearance in the input string variable in the 
data set,
      or in another order specified by the user, instead of ordering them in
      alphanumeric order of the string value, as encode does. The mapping from
      numeric code values to string labels may be one-to-one (coded in 
order of
      first appearance of the string value) or many-to-one (coded in each
      observation by the position of that observation in the data set, or 
in the
      user-specified ordering).

      Author: Roger Newson
      Distribution-Date: 09february2003
      Stata-Version: 7

INSTALLATION FILES                                  (click here to install)
      sencode.ado
      sencode.hlp
------------------------------------------------------------------------------------


------------------------------------------------------------------------------------
package sdecode from http://www.kcl-phs.org.uk/rogernewson/stata7
------------------------------------------------------------------------------------

TITLE
      sdecode: Decode a numeric variable to string, formatting unlabelled 
values

DESCRIPTION/AUTHOR(S)
      sdecode is an extended version of decode. It takes, as input, a numeric
      variable, and generates, as output, a string variable, with values
      corresponding to value labels of the numeric variable for labelled 
values,
      and (optionally) formatted values of the numeric variable for unlabelled
      values. The output string values therefore appear as the numeric input
      values appear in output from the tabulate command. The output string
      variable may replace the input numeric variable or be generated as a new
      variable.

      Author: Roger Newson
      Distribution-Date: 10february2003
      Stata-Version: 7

INSTALLATION FILES                                  (click here to install)
      sdecode.ado
      sdecode.hlp
------------------------------------------------------------------------------------

--
Roger Newson
Lecturer in Medical Statistics
Department of Public Health Sciences
King's College London
5th Floor, Capital House
42 Weston Street
London SE1 3QD
United Kingdom

Tel: 020 7848 6648 International +44 20 7848 6648
Fax: 020 7848 6620 International +44 20 7848 6620
  or 020 7848 6605 International +44 20 7848 6605
Email: roger.newson@kcl.ac.uk
Website: http://www.kcl-phs.org.uk/rogernewson

Opinions expressed are those of the author, not the institution.

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